Route
SLC → AUS
Salt Lake City International Airport Austin Bergstrom International Airport
How punctual is this route?
- On-time arrivals
- 81.5%
- Less than 15 minutes late
- Cancelled
- 0.7%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,796
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 48%
- Late-arriving aircraft 32%
- Air traffic control & airport 16%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 88.0% | 133 |
| October 2025 | 80.8% | 153 |
| November 2025 | 77.6% | 134 |
| December 2025 | 85.7% | 140 |
| January 2026 | 87.3% | 139 |
| February 2026 | 86.4% | 141 |
| March 2026 | 85.2% | 170 |
| April 2026 | 87.1% | 149 |
| May 2026 | 86.4% | 150 |
| June 2026 | 75.5% | 163 |
| July 2026 | 70.1% | 170 |
| August 2026 | 71.2% | 154 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Delta Air Lines | 1,072 | 83.2% | 0.7% | 67 min |
| Southwest Airlines | 482 | 76.2% | 0.6% | 55 min |
| SkyWest Airlines | 242 | 84.5% | 0.8% | 56 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL2728
20% late · 363 flights
-
DL2671
9% late · 165 flights
-
DL2689
13% late · 149 flights
-
OO3955
21% late · 123 flights
-
DL1980
21% late · 110 flights
-
DL1986
15% late · 107 flights
-
DL2581
27% late · 102 flights
-
WN4347
19% late · 59 flights
-
OO3664
11% late · 56 flights
-
WN3733
65% late · 43 flights
-
WN4932
7% late · 43 flights
-
WN3916
31% late · 42 flights
-
WN3580
19% late · 36 flights
-
DL2524
3% late · 31 flights
-
OO3763
10% late · 31 flights
-
WN1137
33% late · 28 flights
-
DL720
13% late · 24 flights
-
OO3702
12% late · 24 flights
-
WN805
21% late · 24 flights
-
WN446
0% late · 23 flights
-
WN717
23% late · 22 flights
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